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Finding the Fourth Proportional to 339,207.40, 508,884.90 and 102,543.90

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Solution

The fourth proportional to 339,207.40, 508,884.90 and 102,543.90 is: 153,838.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,207.40 : 508,884.90 = 102,543.90 : x
  2. Step 2: Convert to fraction form
    339,207.40/508,884.90 = 102,543.90/x
  3. Step 3: Cross multiply
    339,207.40x = 508,884.90 × 102,543.90
  4. Step 4: Simplify right side
    339,207.40x = 52,183,042,297.11
  5. Step 5: Solve for x
    x = 52,183,042,297.11/339,207.40
  6. Step 6: Final answer
    x = 153,838.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.